Stump-puller.



"B. c. ANDERSON.

STUMP PULLBB. APPLIGATION FILED mums, 1910.

Patented Aug. 16,1910.

2 BKEETS'fSHEET l.

INV ENTOR Edward CAR clans-an WITNESSES I'll NORRIS PEYSRS cu, wlsnmaroun c E. 0. ANDERSON.

STUMP FULLER. APPLIUATION FILED MAY 28, 1910.

Patented Aug. 16, 1910.

2 SHEETS-SHEET 2.

WITNESSES Ammay EDWARD C. ANDERSON, OF MILACA, MINNESOTA.

STUMP-PULLER.

Specification of Letters Patent.

Application filed May 28, 1910. Serial No. 563,965.

To all whom it may concern;

Be it known that I, EDWARD C. ANDERSON, a citizen of the United Statesof America, and resident of Milaca, in the county of Millelacs and Stateof Minnesota, have invented certain new and useful Improvements inStump-Pullers, of which the following is a specification.

This invention relates to hoisting machinery and particularly to a classthereunder known as stump pullers.

An object of this invention is to produce a device adapted to pullstumps, the said device being operated by a step by step movement of anoperating handle whereby the leverage of the handle is conveyed to thestump through the medium of a cam and wherein clutches or dogs areutilized for the purpose of communicating the motion of the lever to thestump and for retaining the said connection in an advanced, positionwhile the companion dog or clutch is being readjusted on a lower planefor the purpose of elevating the stump connection another degree orstep.

A still further object of this invention is to produce a stump pullerwhich is detachably connected to a tripod in order that the same may beknocked down for transportation and readily reassembled when the same tobe used and the invention has for another object the provision of astump puller which will possess advantages in points of simplicity,efliciency and durability, roving at the same time comparativelyinexpensive to manufacture.

With the foregoing and other objects in view, the invention consists inthe details of construction and in the arrangement and combination ofparts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to theaccompanying drawings forming part of this specification wherein likecharacters denote corresponding parts in the several views in which-Figure 1 illustrates a view in elevation of a stump puller embodying theinvention; Fig. 2 illustrates an enlarged detail View in section of thelever and its connection with the apparatus; Fig. 3 illustrates an endview of the hoisting mechanism; and Fig. 4 illustrates a sectional viewon the line 4-4 of Fig. 3 with the clutch thereof in plan. Fig. 5illustrates a perspective view of the tripod.

In these drawings 5 denotes a tripod which may be of any appropriateconstruc tion here shown as having a head Gthrough which a rod 7 isextended and secured by a nut 8, the lower end of said rod terminatingin a hook 9.

The stump hoisting apparatus proper comprises a hanger 1O suspended fromthe hook 9, said hanger having a bifurcated lower end forming the forks11 and 12 through which a pin 15% is extended near the junction of theforks and the hanger proper. A pivot 14 of the head 15 extends throughthe forks l1 and 12 and is partially rotatable therein and said head isprovided with fianges'16 on each side thereof which are eccentric to thepivot 14 and form cams which enter the apertures of the links 17. Nearthe lower ends of the links, I provide a pin 18 on which a clutch 19 ispivoted, the said clutch having an aperture 20 for the reception of theshank of the hook 21 which hook has grapples 22 which are connected tothe stump that is to be pulled or to the roots thereof. A detent 23 hasan aperture 24 to receive the shank of the hook 21 and said detentextends between the pin 13 and the junction of the prongs with thehanger proper and said detent serves to retain the hook in its elevatedposition while the clutch 19 is moving longitudinally of the shank ofthe hook for the purpose of gripping the said shank at a point near thehook in order that upward movement of the links 17 will cause the clutchto clamp the shank of the hook and elevate it according to the degree ofmovement of the lever 25 which lever is connected to the socket 26 ofthe head.

By inspecting Fig. 2, it will be observed that owing to the eccentricityof the head, movement of the head on its pivot will result in elevatingand lowering the links in relation to the hanger and with each descentof the links the clutch will move downwardly on the shank of the hookand with each upward movement of the links, the said clutch will clampthe shank of the hook and carry the hook upwardly. The detent willoperate to hold the hook elevated as heretofore indicated so that thehook will be moved upwardly step by step under the influence of thelever as heretofore described.

Owing to the camming connection between the head and the links, thehoisting action may be carried on with the application of a PatentedAug. 16, 1910.

comparatively limited amount of power to the lever.

The upper end of the shank ofthe hook 21 is provided with a guiding arm27 which is connected to the shank of the hook at one endand has itsopposite end embracing the hanger 10 so that as the hook 21 is moved thearm 27 retains the hook and hanger approximately parallel.

I provide the tripod with a brace A which embraces the standards and Iprovide the said standards with shoes B which will slide over thesurface of the ground when the tripod is to be moved. Chains or otherdevices C are connected to the shoes and to one of the standards throughthe medium of a staple D or the like so that when pull is directed onthe link E of one of the shoes the whole tripod may be moved. The shoesare attached to the standards in any approved way as for instancethrough the medium of the pins F.

1. In a stump puller, a hanger, means for sijlspending thehangen'a headpivoted to the hanger, eccentrics on the heads, links to which theeccentrics are connected, a clutch pivoted to the links, a detentcarried by the hanger, a member engaged by the clutch and detent, andmeans for connecting said member to the object to be hoisted.

2. In a stump puller, a hanger, means for suspending the hanger, a headhaving eccentrics thereon, means for mounting the head on the hanger,links to which the eccentrics are connected, a clutch pivoted to thelinks and having an aperture in its end, a hook having a shank extendingthrough the said aperture, a detenthaving an aperture to receive theshank of the hook, means for retaining the detent in the hanger, andmeans for connecting the hook to an object to be pulled.

3.- In a stump puller, a hanger having a bifurcated lower end, a pinthrough said lower end, a head having a pivot extending through thebifurcated end of the hanger, said head having eccentrics thereon, linkshaving apertures to receive the eccentrics, a clutch pivoted to thelinks, a detent carried by the hanger, and a member engaged by theclutch and detent.

In testimony whereof I hereunto afiix my signature in the presence oftwo witnesses.

EDlVARD C. ANDERSON.

Witnesses ALFRED SANDSTROM, B. E. ERIOKSON.

